Answer:
Step-by-step explanation: You just have to isolate x on one side of the equation
4x - 12 = -5x + 51 Add 12 to both sides to isolate 4x on the left
4x = -5x + 63 Add -5x to both sides to isolate both the variable and numbers on their respective sides
9x = 63 Now divide each side by 9 to isolate x and find the answer
x = 7
